Flexible pipe-joint.



No. 708404. Patented Sept. 2, m2.

H. H. WARNER.

(Applxqation filed Nov. 7, 190 1.)

(No Modei.)

UNITED STATES PATENT OFFICE.

HENRY H. WARNER, OF TACOMA, WASHINGTON.

FLEXIBLE PIPE-JOINT.

SPECIFICATION forming part of Letters ratent No. 708,104, datedSeptember 2, 1902.

7 Application filed November 7,1901. Seriallil'o. 81,427. (No model.)

To all whom it may concern;

Be it known that I, HENRY HUBBARD WAR- NER, a citizen of the UnitedStates, residing at Tacoma, in the county of Pierce and State ofWashington, have invented certain new and useful Improvements inFlexible Pipe- Joints, of which the following is a specification.

My invention relates to improvements in flexible pipe-joints; andthe'main object of my invention is the provision of a joint for steam,air, and liquid pipe connections which are especially adapted forrailway-car. purposes.

Another object of my invention is the proyision of a simple, durable,and inexpensive joinlt which is thoroughly efficient and practica Tothis end the invention consists of a pipejoint embodying novel featuresof construction and combination of parts, substantially as disclosedherein.

In the drawings, Figure 1 is aside elevation of my flexible joint. Fig.2 is a sectional view thereof, and Fig. 3 is a top plan View thereof.

Referring to the drawings, Adesignates the curved section or pipe,-provided with the threaded ends B and the yokes O. These yokes are eachprovided with the'lugs D, to

which are pivoted the dogs or detents'E,whichare normally held at rightangles to the yoke and the ends of the pipe by means of the flat springF. Fitting in the shouldered month G of the pipe is the short pipe orcoupling H, which is provided with the shouldered end J, the smoothsurface K, and the threaded outer end L. Surrounding this coupling uponthe smooth surface K, flush against and the same thickness as theshoulder J, is an asbestos gasket M, and also surrounding this surfaceand the same thickness as and contacting the asbestos gasket is ahard-rubber gasket N, which ordinarily projects beyond the end of thepipe A. Fitting and slidingly mounted upon this couplingis the shell ordisk 0, provided with the interiorly-threaded part P, which engages thethreaded ends of the pipe A and compresses the rubber and asbestosgaskets so as to make aswiveling yet steam, air, or liquid tight joint.To prevent the same-that is, the disk-from becoming loose,

. case if a rubber gasket were usedinstead, and

thereby does not bind the joint.

From the foregoing, taken in connection with the drawings, it is evidentthat I provide a very simple, durable, and cheap flexible joint forsteam, air, and liquid pipes and one which by reason of its few partsandeasy assemblage is thoroughly eflicient and practical.

What I claim is-- A swivel flexible joint connection for pipes,comprising apipe provided with a threaded end, a short couplingrotatably mounted in the end of said pipe and having a shoulderedinner'end, a smooth intermediate surface and a threaded outer end, aheat-non-conducting gasket surrounding the smooth surface next to theshouldered end, a hard-rubber gasket having an annular rim surroundingthe smooth surface of the coupling and having the rim beyond' thethreaded end of the pipe, a flanged disk mounted upon the smooth portionand adapted to engage'the threaded end of the pipe and compress thegaskets, a series of lugs formed on the extension of the disk, a yokesurrounding the pipes, a pair of lugs carried by the yoke, a detentpivotally mounted between the lugs, and a flat spring connected to thedetent and having its free end abutting against the exterior of the pipeto normally hold the detent in engagement with one lug of the flangeddisk.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY H. WARNER. Witnesses: RUPERT SoHULrHEIss, FRANK D. WARNER.

